294 LEGUMINOSAE (PEA FAMILY) 



tip barely projecting out of the undivided lightly villous calyx. Mountains 

 of Wyoming and Montana. 



6. Aragallus Blankinshipii A. Nels. 1. c. 58. Tufted on the crown of a 

 woody taproot, silky-sericeous: leaves lax, half as long as the 1-2 dm. high 

 scapes; leaflets 11-17, linear-oblong, acute at both ends, 12-16 mm. long: 

 spike dense, 8-12-flowered: calyx loosely lanate-hirsute, inflated in fruit and 

 becoming subglobose: corolla purple, 20 mm. long; the standard deeply 2- 

 lobed: pod elliptic, acuminate, at length slightly protruded from the calyx. 

 (A. Besseyi Rydb. Mem. N. Y. Bot. Gard. 1: 250. 1900.) Northern Wyo- 

 ming, Montana, and Idaho. 



7. Aragallus podocarpus (Gray) A. Nels. Very low, depressed, tufted 

 plants, villous or in age glabrate: leaflets 11-23, linear-lanceolate, 5-8 mm. 

 long: peduncles 2-flowered, scarcely surpassing the leaves, somewhat deflexed 

 in fruit: flowers violet, 10-15 mm. long: pod large, 15-25 mm. long, bladdery, 

 inflated, broadly ovate, 1-celled, neither suture at all inflexed, puberulent- 

 short-stipitate. (A. inflatus A. Nels. 1. c. 59.) Alpine and subalpine; Colo- 

 rado and far northward. 



8. Aragallus Parryi (Gray), Greene, 1. c. Silky-canescent ; leaves and 

 scapes 10-15 cm. high: leaflets 13-21, oblong-lanceolate, 4-6 mm. long: ca- 

 lyx short, cinereous-pubescent: pod nearly 12 mm. long, terete with a strong 

 ventral groove, grayish-pubescent, not at all stipitate, oblong or narrower, 

 coriaceous, nearly or quite 2-celled. Mountains of Colorado near the limit 

 of trees. 



9. Aragallus viscidulus Rydb. Mem. N. Y. Bot. Gard. 1: 253. 1900. 

 Tufted, the caudex clothed with old petioles and stipules: leaflets 17-31, 

 somewhat villous-pubescent : scape much exceeding the leaves, 10-15 cm. 

 high, sub viscid and somewhat black-hairy: petals yellowish at base, bluish- 

 purple above: pod membranous, oblong-ovate, beaked, black-pubescent or 

 in age glabrate, ventral suture half dividing it, 10-15 mm. long. Montana to 

 Utah and probably in Wyoming. 



10. Aragallus viscidus (Nutt.) Greene, 1. c. More or less glandular-viscid, 

 at least the calyx and commonly the pod: leaflets numerous and small, 5-10 

 mm. long, thickish, oval or oblong, often pubescent when young, at maturity 

 green and glabrate: flowers in a dense oblong head or at length in a short 

 spike, about 10 mm. long: calyx villous and with sessile glands usually evi- 

 dent: pod small, 7-10 mm. long, puberulent, oblong, thin-chartaceous, half 

 2-celled, the small beak or point straight. In the mountains from British 

 America to Colorado; common in Wyoming. 



11. Aragallus gracilis A. Nels. 1. c. 60. Tufted; scapes few-several, 2-5 

 dm. high, slender, erect, lightly pubescent: leaves about half as long as the 

 fruiting scape; leaflets 21-31, sparsely soft-pubescent: spike long, open in 

 fruit; the bracts conspicuous, often exceeding the short-cylindric calyx: 

 corolla ochroleucous or more deeply yellow, about 15 mm. long: pod pubescent, 

 oblong-ovate, about 20 mm. long, semimembranous, soon splitting the calyx, 

 nearly 2-celled. Northern Colorado to Dakota and Manitoba. 



12. Aragallus dispar A. Nels. 1. c. 61. Leaves and scapes rather few, 

 crowded on the crown of a strong taproot ; the persistent membranous stipules 

 white strigose-pubescent: scapes rather stout, noticeably tapering, silky- 

 pubescent, usually unequal: leaves silky-pubescent, unequal; the primary 

 short, with orbicular to oblong leaflets 5 mm. or less in length; those of the 

 longer leaves oblong to linear and 7-12 mm. long: spikes dense, many-flowered; 

 the bracts from very short to longer than the calyx: calyx short-tubular, 

 silky-lanate, its teeth short: corolla ochroleucous with a purple spot on the 

 keel (or more rarely purple throughout), 15-18 mm. long: pod oblong, beaked 

 with a thick point, pubescent, nearly twice as long as the calyx. Northern 

 Wyoming, and from the Dakotas to Oregon. 



13. Aragallus monticola (Gray) Greene, 1. c. Not glandular- viscid, loosely 

 silky-villous, at least the scapes and calyx, 1-2 dm. high: leaflets somewhat 

 glabrate, oblong or lanceolate, 7-15 mm. long: spike oblong or cylindraceous, 

 dense even in fruit; flower hardly 12 mm. long: pod ovate-oblong, between 



